Lapsed May 9, 2025 on the fee record · High confidence
20-year base term ends Dec 21, 2026
Second maintenance fee unpaid; grace period ended.
Filed May 15, 2014 as application 14/279,199 · Granted May 9, 2017
Base term, 20 years from filing · capped by a resolved terminal disclaimer
Today
Lapsed May 9, 2025
2006
2026
Clock starts
Dec 21, 2006
Dec 21, 2006
No longer in force
May 9, 2025
May 9, 2025
Granted
May 9, 2017
May 9, 2017
Term would have run to
Jul 7, 2025
Jul 7, 2025
base term
after the term ends
fee events
Updated Nov 15, 2026 · includes USPTO assignment & status data published Nov 15, 2026 and grant & fee data published Nov 10, 2026 (weekly) · how we know
None
Term adjustment
No prosecution delay on this record.
Capped
Terminal disclaimer
Resolved from the filed document, referencing US 8,745,171.
1 of 2
Maintenance fees paid
Two maintenance fees can end this term early, the ones due 3.5 and 7.5 years from grant; the third one's grace period runs past the term end. This counts the ones the record shows paid.
3
Family applications on record here
Applications sharing this one's continuity chain whose file history this site holds. The family may have others.
Its term would have run to Jul 7, 2025: its 20-year base term, with no adjustment for prosecution delay. A terminal disclaimer resolved from the filed document caps it earlier. Confidence: High. from the record
How we calculated this date
One row per rule, each showing its own input and what it did to the date. A step we could not verify says so instead of resolving itself.
| Step | Input | Date after this step | Confidence |
|---|---|---|---|
| Base term, 20 years from filing | Clock starts Dec 21, 2006, when application 11/644,581, the earliest non-provisional in its chain, was filed (this one was filed May 15, 2014) | Dec 21, 2026 | High confidence |
| Continuity chain | Every parent in the chain resolved | no change | High confidence |
| Patent term adjustment | None on file | no change | High confidence |
| Terminal disclaimer cap | Disclaimer resolved from the filed document (refs US 8,745,171) | capped to Jul 7, 2025 | High confidence |
| Patent term extension | None on file | no change | High confidence |
| Fee events | 1 of 2 maintenance fees paid | lapsed May 9, 2025 | High confidence |
| Computed term end | The steps above, in order | May 9, 2025 | High confidence |
This family
| US 7,844,686 | In force Sep 2027 | Sep 2027 |
| US 8,745,171 | Lapsed on the fee record Jun 2026 | Jun 2026 |
| US 9,645,900 | this patent May 2025 | May 2025 |
The applications whose file history this site holds. The family may have others.
Assignments
Assignment documents as recorded at the USPTO, oldest first, with the reel and frame each was recorded at. A recorded assignment is a filed document, not a statement of current ownership, and the absence of a later one is not evidence that the last one still stands.
| Recorded | Assignor | Assignee | Conveyance |
|---|---|---|---|
| May 15, 2014 Reel 32907, frame 255 | Keith, Robert O., JR. | Maxsp Corporation | Assignment of Assignor's Interest |
| Jul 21, 2015 Reel 36148, frame 889 | New Checkerboard Cattle and Computer Corporation | Maxsp Corporation | Change of Name |
| Jul 21, 2015 Reel 36163, frame 82 | Maxsp Corporation | Goodrich, John B. | Nunc Pro Tunc Confirmatory Assignment with an Effective Date of 7/1/2008 Which Confirms the Agreement of Sale Executed on 7/1/2008 from Maxsp Corporation to John B. Goodrich |
| Jul 21, 2015 Reel 36163, frame 287 | Goodrich, John B. | New Checkerboard Cattle and Computer Corporation | Nunc Pro Tunc Confirmatory Assignment with an Effective Date of 7/1/2008 Which Confirms the Bill of Sale Executed on 9/12/2008 from John B. Goodrich to New Checkerboard Cattle and Computer Corporation |
| Jul 23, 2015 Reel 36168, frame 302 | Maxsp Corporation | Microsoft Technology Licensing, LLC | Assignment of Assignor's Interest |
Sources
Google Patents · The patent document at USPTO · Assignment records at USPTO
USPTO account required: This application in Patent Center · USPTO's maintenance fee lookup
Maintenance fee events come from USPTO's own fee records. Its fee lookup asks for the patent number and the application number.
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Alerts on its grants, lapses and transfers.
Disclaimer cap
This term is capped by a terminal disclaimer resolved from the filed document, referencing US 8,745,171.
Citations
1
later US patent cites this one
That is below the median of utility patents granted in 2017 in our data, the only group it is compared against.
How we rank
Every date shows its work: the base term, any term adjustment or extension, any disclaimer cap, and the maintenance fee record, each with a confidence tier. How this record was built
Computed patent terms end on the dates shown. Related patents and pending applications may cover overlapping subject matter.